diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/merge/MergeGraphTableSparkJob.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/merge/MergeGraphTableSparkJob.java
index e53f4ca30..5f6550e10 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/merge/MergeGraphTableSparkJob.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/merge/MergeGraphTableSparkJob.java
@@ -4,6 +4,7 @@ package eu.dnetlib.dhp.oa.graph.merge;
 import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
 
 import java.util.*;
+import java.util.stream.Collectors;
 
 import javax.xml.crypto.Data;
 
@@ -52,22 +53,22 @@ public class MergeGraphTableSparkJob {
 	public static void main(String[] args) throws Exception {
 
 		String jsonConfiguration = IOUtils
-			.toString(
-				CleanGraphSparkJob.class
-					.getResourceAsStream(
-						"/eu/dnetlib/dhp/oa/graph/merge_graphs_parameters.json"));
+				.toString(
+						CleanGraphSparkJob.class
+								.getResourceAsStream(
+										"/eu/dnetlib/dhp/oa/graph/merge_graphs_parameters.json"));
 		final ArgumentApplicationParser parser = new ArgumentApplicationParser(jsonConfiguration);
 		parser.parseArgument(args);
 
 		String priority = Optional
-			.ofNullable(parser.get("priority"))
-			.orElse(PRIORITY_DEFAULT);
+				.ofNullable(parser.get("priority"))
+				.orElse(PRIORITY_DEFAULT);
 		log.info("priority: {}", priority);
 
 		Boolean isSparkSessionManaged = Optional
-			.ofNullable(parser.get("isSparkSessionManaged"))
-			.map(Boolean::valueOf)
-			.orElse(Boolean.TRUE);
+				.ofNullable(parser.get("isSparkSessionManaged"))
+				.map(Boolean::valueOf)
+				.orElse(Boolean.TRUE);
 		log.info("isSparkSessionManaged: {}", isSparkSessionManaged);
 
 		String betaInputPath = parser.get("betaInputPath");
@@ -89,48 +90,55 @@ public class MergeGraphTableSparkJob {
 		conf.registerKryoClasses(ModelSupport.getOafModelClasses());
 
 		runWithSparkSession(
-			conf,
-			isSparkSessionManaged,
-			spark -> {
-				removeOutputDir(spark, outputPath);
-				mergeGraphTable(spark, priority, betaInputPath, prodInputPath, entityClazz, entityClazz, outputPath);
-			});
+				conf,
+				isSparkSessionManaged,
+				spark -> {
+					removeOutputDir(spark, outputPath);
+					mergeGraphTable(spark, priority, betaInputPath, prodInputPath, entityClazz, entityClazz, outputPath);
+				});
 	}
 
 	private static <P extends Oaf, B extends Oaf> void mergeGraphTable(
-		SparkSession spark,
-		String priority,
-		String betaInputPath,
-		String prodInputPath,
-		Class<P> p_clazz,
-		Class<B> b_clazz,
-		String outputPath) {
+			SparkSession spark,
+			String priority,
+			String betaInputPath,
+			String prodInputPath,
+			Class<P> p_clazz,
+			Class<B> b_clazz,
+			String outputPath) {
 
 		Dataset<Tuple2<String, B>> beta = readTableFromPath(spark, betaInputPath, b_clazz);
 		Dataset<Tuple2<String, P>> prod = readTableFromPath(spark, prodInputPath, p_clazz);
 
 		prod
-			.joinWith(beta, prod.col("_1").equalTo(beta.col("_1")), "full_outer")
-			.map((MapFunction<Tuple2<Tuple2<String, P>, Tuple2<String, B>>, P>) value -> {
-				Optional<P> p = Optional.ofNullable(value._1()).map(Tuple2::_2);
-				Optional<B> b = Optional.ofNullable(value._2()).map(Tuple2::_2);
+				.joinWith(beta, prod.col("_1").equalTo(beta.col("_1")), "full_outer")
+				.map((MapFunction<Tuple2<Tuple2<String, P>, Tuple2<String, B>>, P>) value -> {
+					Optional<P> p = Optional.ofNullable(value._1()).map(Tuple2::_2);
+					Optional<B> b = Optional.ofNullable(value._2()).map(Tuple2::_2);
 
-				if (p.orElse((P) b.orElse((B) DATASOURCE)) instanceof Datasource) {
-					return mergeDatasource(p, b);
-				}
-				switch (priority) {
-					default:
-					case "BETA":
-						return mergeWithPriorityToBETA(p, b);
-					case "PROD":
-						return mergeWithPriorityToPROD(p, b);
-				}
-			}, Encoders.bean(p_clazz))
-			.filter((FilterFunction<P>) Objects::nonNull)
-			.write()
-			.mode(SaveMode.Overwrite)
-			.option("compression", "gzip")
-			.json(outputPath);
+					if (p.orElse((P) b.orElse((B) DATASOURCE)) instanceof Datasource) {
+						return mergeDatasource(p, b);
+					}
+					switch (priority) {
+						default:
+						case "BETA":
+							return mergeWithPriorityToBETA(p, b);
+						case "PROD":
+							return mergeWithPriorityToPROD(p, b);
+					}
+				}, Encoders.bean(p_clazz))
+				.filter((FilterFunction<P>) Objects::nonNull)
+				.filter((FilterFunction<P>) o -> {
+					HashSet<String> collectedFromNames = Optional
+							.ofNullable(o.getCollectedfrom())
+							.map(c -> c.stream().map(KeyValue::getValue).collect(Collectors.toCollection(HashSet::new)))
+							.orElse(new HashSet<String>());
+					return !collectedFromNames.contains("Datacite");
+				})
+				.write()
+				.mode(SaveMode.Overwrite)
+				.option("compression", "gzip")
+				.json(outputPath);
 	}
 
 	/**
@@ -184,19 +192,19 @@ public class MergeGraphTableSparkJob {
 	}
 
 	private static <T extends Oaf> Dataset<Tuple2<String, T>> readTableFromPath(
-		SparkSession spark, String inputEntityPath, Class<T> clazz) {
+			SparkSession spark, String inputEntityPath, Class<T> clazz) {
 
 		log.info("Reading Graph table from: {}", inputEntityPath);
 		return spark
-			.read()
-			.textFile(inputEntityPath)
-			.map(
-				(MapFunction<String, Tuple2<String, T>>) value -> {
-					final T t = OBJECT_MAPPER.readValue(value, clazz);
-					final String id = ModelSupport.idFn().apply(t);
-					return new Tuple2<>(id, t);
-				},
-				Encoders.tuple(Encoders.STRING(), Encoders.kryo(clazz)));
+				.read()
+				.textFile(inputEntityPath)
+				.map(
+						(MapFunction<String, Tuple2<String, T>>) value -> {
+							final T t = OBJECT_MAPPER.readValue(value, clazz);
+							final String id = ModelSupport.idFn().apply(t);
+							return new Tuple2<>(id, t);
+						},
+						Encoders.tuple(Encoders.STRING(), Encoders.kryo(clazz)));
 	}
 
 	private static void removeOutputDir(SparkSession spark, String path) {